11 files changed, 39 insertions, 46 deletions

diff --git a/drivers/net/wireless/ath/ath9k/hif_usb.c b/drivers/net/wireless/ath/ath9k/hif_usb.c
index f1b8af64569c..2d10239ce829 100644
--- a/drivers/net/wireless/ath/ath9k/hif_usb.c
+++ b/drivers/net/wireless/ath/ath9k/hif_usb.c
@@ -1040,7 +1040,7 @@ static int ath9k_hif_usb_probe(struct usb_interface *interface,
         }
 
         ret = ath9k_htc_hw_init(hif_dev->htc_handle,
-                                &hif_dev->udev->dev, hif_dev->device_id,
+                                &interface->dev, hif_dev->device_id,
                                 hif_dev->udev->product, id->driver_info);
         if (ret) {
                 ret = -EINVAL;
@@ -1158,7 +1158,7 @@ fail_resume:
 #endif
 
 static struct usb_driver ath9k_hif_usb_driver = {
-        .name = "ath9k_hif_usb",
+        .name = KBUILD_MODNAME,
         .probe = ath9k_hif_usb_probe,
         .disconnect = ath9k_hif_usb_disconnect,
 #ifdef CONFIG_PM
diff --git a/drivers/net/wireless/ath/ath9k/hw.c b/drivers/net/wireless/ath/ath9k/hw.c
index 1ec9bcd6b281..c95bc5cc1a1f 100644
--- a/drivers/net/wireless/ath/ath9k/hw.c
+++ b/drivers/net/wireless/ath/ath9k/hw.c
@@ -1254,15 +1254,6 @@ int ath9k_hw_reset(struct ath_hw *ah, struct ath9k_channel *chan,
         ah->txchainmask = common->tx_chainmask;
         ah->rxchainmask = common->rx_chainmask;
 
-        if ((common->bus_ops->ath_bus_type != ATH_USB) && !ah->chip_fullsleep) {
-                ath9k_hw_abortpcurecv(ah);
-                if (!ath9k_hw_stopdmarecv(ah)) {
-                        ath_dbg(common, ATH_DBG_XMIT,
-                                "Failed to stop receive dma\n");
-                        bChannelChange = false;
-                }
-        }
-
         if (!ath9k_hw_setpower(ah, ATH9K_PM_AWAKE))
                 return -EIO;
 
diff --git a/drivers/net/wireless/ath/ath9k/mac.c b/drivers/net/wireless/ath/ath9k/mac.c
index 562257ac52cf..edc1cbbfecaf 100644
--- a/drivers/net/wireless/ath/ath9k/mac.c
+++ b/drivers/net/wireless/ath/ath9k/mac.c
@@ -751,28 +751,47 @@ void ath9k_hw_abortpcurecv(struct ath_hw *ah)
 }
 EXPORT_SYMBOL(ath9k_hw_abortpcurecv);
 
-bool ath9k_hw_stopdmarecv(struct ath_hw *ah)
+bool ath9k_hw_stopdmarecv(struct ath_hw *ah, bool *reset)
 {
 #define AH_RX_STOP_DMA_TIMEOUT 10000   /* usec */
 #define AH_RX_TIME_QUANTUM     100     /* usec */
         struct ath_common *common = ath9k_hw_common(ah);
+        u32 mac_status, last_mac_status = 0;
         int i;
 
+        /* Enable access to the DMA observation bus */
+        REG_WRITE(ah, AR_MACMISC,
+                  ((AR_MACMISC_DMA_OBS_LINE_8 << AR_MACMISC_DMA_OBS_S) |
+                   (AR_MACMISC_MISC_OBS_BUS_1 <<
+                    AR_MACMISC_MISC_OBS_BUS_MSB_S)));
+
         REG_WRITE(ah, AR_CR, AR_CR_RXD);
 
         /* Wait for rx enable bit to go low */
         for (i = AH_RX_STOP_DMA_TIMEOUT / AH_TIME_QUANTUM; i != 0; i--) {
                 if ((REG_READ(ah, AR_CR) & AR_CR_RXE) == 0)
                         break;
+
+                if (!AR_SREV_9300_20_OR_LATER(ah)) {
+                        mac_status = REG_READ(ah, AR_DMADBG_7) & 0x7f0;
+                        if (mac_status == 0x1c0 && mac_status == last_mac_status) {
+                                *reset = true;
+                                break;
+                        }
+
+                        last_mac_status = mac_status;
+                }
+
                 udelay(AH_TIME_QUANTUM);
         }
 
         if (i == 0) {
                 ath_err(common,
-                        "DMA failed to stop in %d ms AR_CR=0x%08x AR_DIAG_SW=0x%08x\n",
+                        "DMA failed to stop in %d ms AR_CR=0x%08x AR_DIAG_SW=0x%08x DMADBG_7=0x%08x\n",
                         AH_RX_STOP_DMA_TIMEOUT / 1000,
                         REG_READ(ah, AR_CR),
-                        REG_READ(ah, AR_DIAG_SW));
+                        REG_READ(ah, AR_DIAG_SW),
+                        REG_READ(ah, AR_DMADBG_7));
                 return false;
         } else {
                 return true;
diff --git a/drivers/net/wireless/ath/ath9k/mac.h b/drivers/net/wireless/ath/ath9k/mac.h
index b2b2ff852c32..c2a59386fb9c 100644
--- a/drivers/net/wireless/ath/ath9k/mac.h
+++ b/drivers/net/wireless/ath/ath9k/mac.h
@@ -695,7 +695,7 @@ bool ath9k_hw_setrxabort(struct ath_hw *ah, bool set);
 void ath9k_hw_putrxbuf(struct ath_hw *ah, u32 rxdp);
 void ath9k_hw_startpcureceive(struct ath_hw *ah, bool is_scanning);
 void ath9k_hw_abortpcurecv(struct ath_hw *ah);
-bool ath9k_hw_stopdmarecv(struct ath_hw *ah);
+bool ath9k_hw_stopdmarecv(struct ath_hw *ah, bool *reset);
 int ath9k_hw_beaconq_setup(struct ath_hw *ah);
 
 /* Interrupt Handling */
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index a9c3f4672aa0..dcd19bc337d1 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -486,12 +486,12 @@ start_recv:
 bool ath_stoprecv(struct ath_softc *sc)
 {
         struct ath_hw *ah = sc->sc_ah;
-        bool stopped;
+        bool stopped, reset = false;
 
         spin_lock_bh(&sc->rx.rxbuflock);
         ath9k_hw_abortpcurecv(ah);
         ath9k_hw_setrxfilter(ah, 0);
-        stopped = ath9k_hw_stopdmarecv(ah);
+        stopped = ath9k_hw_stopdmarecv(ah, &reset);
 
         if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
                 ath_edma_stop_recv(sc);
@@ -506,7 +506,7 @@ bool ath_stoprecv(struct ath_softc *sc)
                         "confusing the DMA engine when we start RX up\n");
                 ATH_DBG_WARN_ON_ONCE(!stopped);
         }
-        return stopped;
+        return stopped || reset;
 }
 
 void ath_flushrecv(struct ath_softc *sc)
diff --git a/drivers/net/wireless/iwlegacy/iwl-3945-hw.h b/drivers/net/wireless/iwlegacy/iwl-3945-hw.h
index 779d3cb86e2c..5c3a68d3af12 100644
--- a/drivers/net/wireless/iwlegacy/iwl-3945-hw.h
+++ b/drivers/net/wireless/iwlegacy/iwl-3945-hw.h
@@ -74,8 +74,6 @@
 /* RSSI to dBm */
 #define IWL39_RSSI_OFFSET       95
 
-#define IWL_DEFAULT_TX_POWER    0x0F
-
 /*
  * EEPROM related constants, enums, and structures.
  */
diff --git a/drivers/net/wireless/iwlegacy/iwl-4965-hw.h b/drivers/net/wireless/iwlegacy/iwl-4965-hw.h
index 08b189c8472d..fc6fa2886d9c 100644
--- a/drivers/net/wireless/iwlegacy/iwl-4965-hw.h
+++ b/drivers/net/wireless/iwlegacy/iwl-4965-hw.h
@@ -804,9 +804,6 @@ struct iwl4965_scd_bc_tbl {
 
 #define IWL4965_DEFAULT_TX_RETRY  15
 
-/* Limit range of txpower output target to be between these values */
-#define IWL4965_TX_POWER_TARGET_POWER_MIN       (0)     /* 0 dBm: 1 milliwatt */
-
 /* EEPROM */
 #define IWL4965_FIRST_AMPDU_QUEUE       10
 
diff --git a/drivers/net/wireless/iwlegacy/iwl-core.c b/drivers/net/wireless/iwlegacy/iwl-core.c
index 7007d61bb6b5..c1511b14b239 100644
--- a/drivers/net/wireless/iwlegacy/iwl-core.c
+++ b/drivers/net/wireless/iwlegacy/iwl-core.c
@@ -160,6 +160,7 @@ int iwl_legacy_init_geos(struct iwl_priv *priv)
         struct ieee80211_channel *geo_ch;
         struct ieee80211_rate *rates;
         int i = 0;
+        s8 max_tx_power = 0;
 
         if (priv->bands[IEEE80211_BAND_2GHZ].n_bitrates ||
             priv->bands[IEEE80211_BAND_5GHZ].n_bitrates) {
@@ -235,8 +236,8 @@ int iwl_legacy_init_geos(struct iwl_priv *priv)
 
                         geo_ch->flags |= ch->ht40_extension_channel;
 
-                        if (ch->max_power_avg > priv->tx_power_device_lmt)
-                                priv->tx_power_device_lmt = ch->max_power_avg;
+                        if (ch->max_power_avg > max_tx_power)
+                                max_tx_power = ch->max_power_avg;
                 } else {
                         geo_ch->flags |= IEEE80211_CHAN_DISABLED;
                 }
@@ -249,6 +250,10 @@ int iwl_legacy_init_geos(struct iwl_priv *priv)
                                  geo_ch->flags);
         }
 
+        priv->tx_power_device_lmt = max_tx_power;
+        priv->tx_power_user_lmt = max_tx_power;
+        priv->tx_power_next = max_tx_power;
+
         if ((priv->bands[IEEE80211_BAND_5GHZ].n_channels == 0) &&
              priv->cfg->sku & IWL_SKU_A) {
                 IWL_INFO(priv, "Incorrectly detected BG card as ABG. "
@@ -1124,11 +1129,11 @@ int iwl_legacy_set_tx_power(struct iwl_priv *priv, s8 tx_power, bool force)
         if (!priv->cfg->ops->lib->send_tx_power)
                 return -EOPNOTSUPP;
 
-        if (tx_power < IWL4965_TX_POWER_TARGET_POWER_MIN) {
+        /* 0 dBm mean 1 milliwatt */
+        if (tx_power < 0) {
                 IWL_WARN(priv,
-                         "Requested user TXPOWER %d below lower limit %d.\n",
-                         tx_power,
-                         IWL4965_TX_POWER_TARGET_POWER_MIN);
+                         "Requested user TXPOWER %d below 1 mW.\n",
+                         tx_power);
                 return -EINVAL;
         }
 
diff --git a/drivers/net/wireless/iwlegacy/iwl-eeprom.c b/drivers/net/wireless/iwlegacy/iwl-eeprom.c
index 04c5648027df..cb346d1a9ffa 100644
--- a/drivers/net/wireless/iwlegacy/iwl-eeprom.c
+++ b/drivers/net/wireless/iwlegacy/iwl-eeprom.c
@@ -471,13 +471,6 @@ int iwl_legacy_init_channel_map(struct iwl_priv *priv)
                                              flags & EEPROM_CHANNEL_RADAR))
                                        ? "" : "not ");
 
-                        /* Set the tx_power_user_lmt to the highest power
-                         * supported by any channel */
-                        if (eeprom_ch_info[ch].max_power_avg >
-                                                priv->tx_power_user_lmt)
-                                priv->tx_power_user_lmt =
-                                    eeprom_ch_info[ch].max_power_avg;
-
                         ch_info++;
                 }
         }
diff --git a/drivers/net/wireless/iwlegacy/iwl3945-base.c b/drivers/net/wireless/iwlegacy/iwl3945-base.c
index 28eb3d885ba1..cc7ebcee60e5 100644
--- a/drivers/net/wireless/iwlegacy/iwl3945-base.c
+++ b/drivers/net/wireless/iwlegacy/iwl3945-base.c
@@ -3825,10 +3825,6 @@ static int iwl3945_init_drv(struct iwl_priv *priv)
         priv->force_reset[IWL_FW_RESET].reset_duration =
                 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
 
-
-        priv->tx_power_user_lmt = IWL_DEFAULT_TX_POWER;
-        priv->tx_power_next = IWL_DEFAULT_TX_POWER;
-
         if (eeprom->version < EEPROM_3945_EEPROM_VERSION) {
                 IWL_WARN(priv, "Unsupported EEPROM version: 0x%04X\n",
                          eeprom->version);
diff --git a/drivers/net/wireless/iwlegacy/iwl4965-base.c b/drivers/net/wireless/iwlegacy/iwl4965-base.c
index 91b3d8b9d7a5..d484c3678163 100644
--- a/drivers/net/wireless/iwlegacy/iwl4965-base.c
+++ b/drivers/net/wireless/iwlegacy/iwl4965-base.c
@@ -3140,12 +3140,6 @@ static int iwl4965_init_drv(struct iwl_priv *priv)
 
         iwl_legacy_init_scan_params(priv);
 
-        /* Set the tx_power_user_lmt to the lowest power level
-         * this value will get overwritten by channel max power avg
-         * from eeprom */
-        priv->tx_power_user_lmt = IWL4965_TX_POWER_TARGET_POWER_MIN;
-        priv->tx_power_next = IWL4965_TX_POWER_TARGET_POWER_MIN;
-
         ret = iwl_legacy_init_channel_map(priv);
         if (ret) {
                 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);